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Finding the Third Proportional to 10,690 and 16,926

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Solution

The third proportional to 10,690 and 16,926 is: 26,799.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,690 : 16,926 = 16,926 : x
  2. Step 2: Convert to fraction form
    10,690/16,926 = 16,926/x
  3. Step 3: Cross multiply
    10,690x = 16,926 × 16,926
  4. Step 4: Simplify right side
    10,690x = 286,489,476
  5. Step 5: Solve for x
    x = 286,489,476/10,690
  6. Step 6: Final answer
    x = 26,799.76

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.